如何在Ruby中按降序排序？
[英]How to sort in descending order in Ruby?
问题描述
似乎Ruby只按升序排序。
例如，我将以下数组分配给名为'books'的变量
books = ['Why Communism doesn't work' , "Giants", "Mein Kampf" ]
要按降序对书籍进行排序，以下代码是否正确？
books.sort! do |f,b|
b<=>f
end
1 个解决方案
解决方案1
8 已采纳 2017-08-23 09:03:06
按降序排序的快速方法是使用reverse
books.sort.reverse
如何按降序按值排序哈希并在ruby中输出哈希？
[英]How to sort a hash by value in descending order and output a hash in ruby?
Ruby Array#sort 它如何知道块应该按升序或降序排序
[英]Ruby Array#sort how it knows that the block should sort in ascending or descending order
按降序按值对哈希值进行排序，然后按升序顺序键入ruby
[英]Sort a hash by value in descending order and then key in ascending order ruby
如何在不改变相同值ruby的位置的情况下以降序对哈希进行排序
[英]how to sort hash in descending order with out changing position of same value ruby
如何根据Ruby中的键值对之一对哈希行进行降序排序？
[英]How to sort lines of a hash in descending order according to one of the key-value pairs in Ruby?
通过Ruby中包含元素的哈希键按升序和降序对数组进行排序
[英]sort an array in ascending and descending order by the hash keys of the containing elements in Ruby
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.